A video circulating online appears to show a Bills fan suffering a serious leg injury during a tailgating stunt before Sunday's game against the Steelers.

Hardly a week goes by without a Bills fan making a national website for a tailgating stunt, but serious injury usually seems to be avoided.

Sunday's video appeared to be first publicized by the "Black Adam Schefter" parody account – which has more than 30,000 followers – but it's not clear if that is the original video. A slightly longer version appeared later on YouTube. The video appears to be authentic. (Warning: The video is graphic.)

Nick Veronica– Nick Veronica joined The News in 2013 and began covering the Bills in 2016. He is a Buffalo native and a graduate of Canisius College. You can follow him on Twitter @NickVeronica and on Facebook at fb.com/ByNickVeronica.